I did try to create web service client using eclipse. Imported wsdl to eclipse project and tried to create java client but I am getting following exception :

IWAB0399E Error in generating Java from WSDL: java.lang.RuntimeException: Unknown element _value
java.lang.RuntimeException: Unknown element _value
at org.apache.axis.wsdl.toJava.JavaBeanWriter.getBinaryTypeEncoderName(JavaBeanWriter.java:490)
at org.apache.axis.wsdl.toJava.JavaBeanWriter.writeSimpleTypeGetter(JavaBeanWriter.java:928)
at org.apache.axis.wsdl.toJava.JavaBeanWriter.writeAccessMethods(JavaBeanWriter.java:1102)
at org.apache.axis.wsdl.toJava.JavaBeanWriter.writeFileBody(JavaBeanWriter.java:238)
at org.apache.axis.wsdl.toJava.JavaWriter.generate(JavaWriter.java:127)
at org.apache.axis.wsdl.toJava.JavaBeanWriter.generate(JavaBeanWriter.java:1405)
at org.apache.axis.wsdl.toJava.JavaTypeWriter.generate(JavaTypeWriter.java:113)
at org.apache.axis.wsdl.toJava.JavaGeneratorFactory$Writers.generate(JavaGeneratorFactory.java:421)
at org.apache.axis.wsdl.gen.Parser.generateTypes(Parser.java:547)
at org.apache.axis.wsdl.gen.Parser.generate(Parser.java:432)
at org.apache.axis.wsdl.gen.Parser.access$000(Parser.java:45)
at org.apache.axis.wsdl.gen.Parser$WSDLRunnable.run(Parser.java:362)
at java.lang.Thread.run(Unknown Source)

This works just fine in SoapUI. Also can access this from other clients.

You can access the wsdl fine from http://unit7165.oracleads.com:9008/opptyMgmtOpportunities/OpportunityService?wsdl